19419

Appears in sequences

• Positions of remoteness 3 in Beans-Don't-Talk.at n=44A005695
• Expansion of x*(-1+4*x)/((x-1)*(2*x-1)*(4*x^2+4*x-1)).at n=8A110052
• Ascending sequence of numbers such that the sum of any two distinct elements (even + odd) is a prime number.at n=39A180743
• Number of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.at n=14A180805
• Array read by antidiagonals: T(n,k) is the number of unrooted 3-connected triangulations of a disk with n interior nodes and k nodes on the boundary, n >= 1, k >= 3.at n=50A342053
• a(n) = Sum_{i=1..n} (prime(i+1)-prime(i))*prime(n+1-i).at n=48A343531
• Expansion of 1 / ( (1 - 8*x^4) * (1 - x/(1 - 8*x^4)^(1/4)) ).at n=19A373627